/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-60655ea [2020-09-15 13:49:27,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-15 13:49:27,710 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-15 13:49:27,744 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-15 13:49:27,745 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-15 13:49:27,756 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-15 13:49:27,758 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-15 13:49:27,763 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-15 13:49:27,767 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-15 13:49:27,769 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-15 13:49:27,771 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-15 13:49:27,772 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-15 13:49:27,773 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-15 13:49:27,777 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-15 13:49:27,780 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-15 13:49:27,782 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-15 13:49:27,786 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-15 13:49:27,790 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-15 13:49:27,794 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-15 13:49:27,804 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-15 13:49:27,809 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-15 13:49:27,811 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-15 13:49:27,813 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-15 13:49:27,815 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-15 13:49:27,820 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-15 13:49:27,840 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-15 13:49:27,841 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-15 13:49:27,842 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-15 13:49:27,843 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-15 13:49:27,872 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-15 13:49:27,872 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-15 13:49:27,874 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-15 13:49:27,875 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-15 13:49:27,875 INFO L138 SettingsManager]: * Use SBE=true [2020-09-15 13:49:27,875 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-15 13:49:27,875 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-15 13:49:27,876 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-15 13:49:27,876 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-15 13:49:27,876 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-15 13:49:27,876 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-15 13:49:27,876 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-15 13:49:27,877 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-15 13:49:27,877 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-15 13:49:27,877 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-15 13:49:27,877 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-15 13:49:27,877 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-15 13:49:27,878 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-15 13:49:27,878 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-15 13:49:27,878 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-15 13:49:27,878 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-15 13:49:27,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-15 13:49:27,879 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-15 13:49:27,879 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-15 13:49:27,879 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-15 13:49:27,879 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-15 13:49:27,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-15 13:49:27,880 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-15 13:49:27,880 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-15 13:49:27,880 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-15 13:49:27,880 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-15 13:49:28,408 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-15 13:49:28,442 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-15 13:49:28,449 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-15 13:49:28,451 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-15 13:49:28,453 INFO L275 PluginConnector]: CDTParser initialized [2020-09-15 13:49:28,456 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i [2020-09-15 13:49:28,569 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f0434da8/20d3a48f6297488992da8cbf54bdb106/FLAGe8d6b0580 [2020-09-15 13:49:29,278 INFO L306 CDTParser]: Found 1 translation units. [2020-09-15 13:49:29,279 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i [2020-09-15 13:49:29,310 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f0434da8/20d3a48f6297488992da8cbf54bdb106/FLAGe8d6b0580 [2020-09-15 13:49:29,521 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f0434da8/20d3a48f6297488992da8cbf54bdb106 [2020-09-15 13:49:29,540 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-15 13:49:29,548 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-15 13:49:29,552 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-15 13:49:29,553 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-15 13:49:29,559 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-15 13:49:29,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 01:49:29" (1/1) ... [2020-09-15 13:49:29,568 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cf10263 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:49:29, skipping insertion in model container [2020-09-15 13:49:29,569 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 01:49:29" (1/1) ... [2020-09-15 13:49:29,583 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-15 13:49:29,674 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-15 13:49:30,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-15 13:49:30,376 INFO L203 MainTranslator]: Completed pre-run [2020-09-15 13:49:30,432 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-15 13:49:30,524 INFO L208 MainTranslator]: Completed translation [2020-09-15 13:49:30,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:49:30 WrapperNode [2020-09-15 13:49:30,525 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-15 13:49:30,526 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-15 13:49:30,527 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-15 13:49:30,527 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-15 13:49:30,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:49:30" (1/1) ... [2020-09-15 13:49:30,566 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:49:30" (1/1) ... [2020-09-15 13:49:30,602 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-15 13:49:30,603 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-15 13:49:30,604 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-15 13:49:30,604 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-15 13:49:30,617 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:49:30" (1/1) ... [2020-09-15 13:49:30,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:49:30" (1/1) ... [2020-09-15 13:49:30,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:49:30" (1/1) ... [2020-09-15 13:49:30,622 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:49:30" (1/1) ... [2020-09-15 13:49:30,630 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:49:30" (1/1) ... [2020-09-15 13:49:30,634 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:49:30" (1/1) ... [2020-09-15 13:49:30,637 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:49:30" (1/1) ... [2020-09-15 13:49:30,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-15 13:49:30,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-15 13:49:30,643 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-15 13:49:30,643 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-15 13:49:30,645 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:49:30" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-15 13:49:30,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-15 13:49:30,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-15 13:49:30,771 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2020-09-15 13:49:30,771 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2020-09-15 13:49:30,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-15 13:49:30,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-15 13:49:30,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-15 13:49:30,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-15 13:49:30,772 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2020-09-15 13:49:30,772 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2020-09-15 13:49:30,775 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-15 13:49:31,487 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-15 13:49:31,488 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-15 13:49:31,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 01:49:31 BoogieIcfgContainer [2020-09-15 13:49:31,494 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-15 13:49:31,496 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-15 13:49:31,497 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-15 13:49:31,502 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-15 13:49:31,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 01:49:29" (1/3) ... [2020-09-15 13:49:31,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f5be933 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 01:49:31, skipping insertion in model container [2020-09-15 13:49:31,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:49:30" (2/3) ... [2020-09-15 13:49:31,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f5be933 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 01:49:31, skipping insertion in model container [2020-09-15 13:49:31,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 01:49:31" (3/3) ... [2020-09-15 13:49:31,508 INFO L109 eAbstractionObserver]: Analyzing ICFG read_write_lock-1.i [2020-09-15 13:49:31,525 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-15 13:49:31,526 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-15 13:49:31,541 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-15 13:49:31,543 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-15 13:49:31,586 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,587 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,587 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,587 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,588 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,588 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,589 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,589 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,589 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,590 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,590 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,591 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,591 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,592 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,592 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,593 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,593 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,593 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,594 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,594 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,595 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,595 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,596 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,596 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,596 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,597 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,597 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,597 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,597 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,598 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,598 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,599 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,599 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,599 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,600 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,600 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,600 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,601 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,607 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,608 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,608 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,608 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,608 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,608 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,613 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,614 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,614 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,614 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,615 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,615 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,615 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,621 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,621 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,622 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,622 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,622 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,622 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,625 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,625 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,625 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,626 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,626 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,626 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,626 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:31,682 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-09-15 13:49:31,720 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-15 13:49:31,720 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-15 13:49:31,721 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-15 13:49:31,721 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-15 13:49:31,721 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-15 13:49:31,721 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-15 13:49:31,721 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-15 13:49:31,721 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-15 13:49:31,756 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 100 transitions, 268 flow [2020-09-15 13:49:31,758 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 100 transitions, 268 flow [2020-09-15 13:49:31,835 INFO L129 PetriNetUnfolder]: 19/134 cut-off events. [2020-09-15 13:49:31,835 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2020-09-15 13:49:31,846 INFO L80 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 134 events. 19/134 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 336 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 91. Up to 12 conditions per place. [2020-09-15 13:49:31,852 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 100 transitions, 268 flow [2020-09-15 13:49:31,917 INFO L129 PetriNetUnfolder]: 19/134 cut-off events. [2020-09-15 13:49:31,918 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2020-09-15 13:49:31,921 INFO L80 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 134 events. 19/134 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 336 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 91. Up to 12 conditions per place. [2020-09-15 13:49:31,931 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2448 [2020-09-15 13:49:31,932 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-15 13:49:32,979 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-09-15 13:49:33,784 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2020-09-15 13:49:33,904 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-09-15 13:49:33,930 INFO L206 etLargeBlockEncoding]: Checked pairs total: 6576 [2020-09-15 13:49:33,931 INFO L214 etLargeBlockEncoding]: Total number of compositions: 45 [2020-09-15 13:49:33,937 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 56 places, 55 transitions, 178 flow [2020-09-15 13:49:34,420 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 4306 states. [2020-09-15 13:49:34,423 INFO L276 IsEmpty]: Start isEmpty. Operand 4306 states. [2020-09-15 13:49:34,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-15 13:49:34,437 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:49:34,438 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:49:34,439 INFO L427 AbstractCegarLoop]: === Iteration 1 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 13:49:34,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:49:34,449 INFO L82 PathProgramCache]: Analyzing trace with hash -947191722, now seen corresponding path program 1 times [2020-09-15 13:49:34,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:49:34,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598727972] [2020-09-15 13:49:34,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:49:34,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:49:34,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 13:49:34,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598727972] [2020-09-15 13:49:34,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:49:34,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 13:49:34,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1616074655] [2020-09-15 13:49:34,913 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 13:49:34,917 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 13:49:34,939 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-15 13:49:34,940 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 13:49:34,943 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 13:49:34,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-15 13:49:34,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:49:34,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-15 13:49:34,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-15 13:49:34,971 INFO L87 Difference]: Start difference. First operand 4306 states. Second operand 4 states. [2020-09-15 13:49:35,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:49:35,218 INFO L93 Difference]: Finished difference Result 9727 states and 31398 transitions. [2020-09-15 13:49:35,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-15 13:49:35,221 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-09-15 13:49:35,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:49:35,329 INFO L225 Difference]: With dead ends: 9727 [2020-09-15 13:49:35,330 INFO L226 Difference]: Without dead ends: 7325 [2020-09-15 13:49:35,332 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-15 13:49:35,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7325 states. [2020-09-15 13:49:35,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7325 to 4376. [2020-09-15 13:49:35,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4376 states. [2020-09-15 13:49:35,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4376 states to 4376 states and 14751 transitions. [2020-09-15 13:49:35,734 INFO L78 Accepts]: Start accepts. Automaton has 4376 states and 14751 transitions. Word has length 8 [2020-09-15 13:49:35,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:49:35,735 INFO L479 AbstractCegarLoop]: Abstraction has 4376 states and 14751 transitions. [2020-09-15 13:49:35,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-15 13:49:35,735 INFO L276 IsEmpty]: Start isEmpty. Operand 4376 states and 14751 transitions. [2020-09-15 13:49:35,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-15 13:49:35,737 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:49:35,738 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:49:35,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-15 13:49:35,738 INFO L427 AbstractCegarLoop]: === Iteration 2 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 13:49:35,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:49:35,739 INFO L82 PathProgramCache]: Analyzing trace with hash 284128253, now seen corresponding path program 1 times [2020-09-15 13:49:35,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:49:35,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341245091] [2020-09-15 13:49:35,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:49:35,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:49:35,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 13:49:35,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341245091] [2020-09-15 13:49:35,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:49:35,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 13:49:35,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [450359054] [2020-09-15 13:49:35,895 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 13:49:35,896 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 13:49:35,899 INFO L274 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-09-15 13:49:35,899 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 13:49:35,921 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [27203#(not (= ~r~0 0))] [2020-09-15 13:49:35,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 13:49:35,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:49:35,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 13:49:35,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 13:49:35,924 INFO L87 Difference]: Start difference. First operand 4376 states and 14751 transitions. Second operand 5 states. [2020-09-15 13:49:36,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:49:36,085 INFO L93 Difference]: Finished difference Result 6872 states and 20348 transitions. [2020-09-15 13:49:36,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-15 13:49:36,087 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-09-15 13:49:36,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:49:36,150 INFO L225 Difference]: With dead ends: 6872 [2020-09-15 13:49:36,150 INFO L226 Difference]: Without dead ends: 6776 [2020-09-15 13:49:36,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 13:49:36,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6776 states. [2020-09-15 13:49:36,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6776 to 4772. [2020-09-15 13:49:36,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4772 states. [2020-09-15 13:49:36,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4772 states to 4772 states and 14625 transitions. [2020-09-15 13:49:36,463 INFO L78 Accepts]: Start accepts. Automaton has 4772 states and 14625 transitions. Word has length 10 [2020-09-15 13:49:36,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:49:36,464 INFO L479 AbstractCegarLoop]: Abstraction has 4772 states and 14625 transitions. [2020-09-15 13:49:36,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 13:49:36,464 INFO L276 IsEmpty]: Start isEmpty. Operand 4772 states and 14625 transitions. [2020-09-15 13:49:36,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-15 13:49:36,467 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:49:36,467 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:49:36,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-15 13:49:36,467 INFO L427 AbstractCegarLoop]: === Iteration 3 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 13:49:36,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:49:36,468 INFO L82 PathProgramCache]: Analyzing trace with hash 78570353, now seen corresponding path program 2 times [2020-09-15 13:49:36,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:49:36,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401498738] [2020-09-15 13:49:36,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:49:36,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:49:36,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 13:49:36,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401498738] [2020-09-15 13:49:36,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:49:36,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 13:49:36,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [917230495] [2020-09-15 13:49:36,549 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 13:49:36,550 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 13:49:36,553 INFO L274 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-09-15 13:49:36,553 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 13:49:36,559 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 13:49:36,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 13:49:36,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:49:36,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 13:49:36,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 13:49:36,562 INFO L87 Difference]: Start difference. First operand 4772 states and 14625 transitions. Second operand 3 states. [2020-09-15 13:49:36,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:49:36,613 INFO L93 Difference]: Finished difference Result 2244 states and 5528 transitions. [2020-09-15 13:49:36,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 13:49:36,614 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-15 13:49:36,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:49:36,645 INFO L225 Difference]: With dead ends: 2244 [2020-09-15 13:49:36,645 INFO L226 Difference]: Without dead ends: 2180 [2020-09-15 13:49:36,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 13:49:36,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2180 states. [2020-09-15 13:49:36,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2180 to 2180. [2020-09-15 13:49:36,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2180 states. [2020-09-15 13:49:36,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2180 states to 2180 states and 5394 transitions. [2020-09-15 13:49:36,739 INFO L78 Accepts]: Start accepts. Automaton has 2180 states and 5394 transitions. Word has length 10 [2020-09-15 13:49:36,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:49:36,739 INFO L479 AbstractCegarLoop]: Abstraction has 2180 states and 5394 transitions. [2020-09-15 13:49:36,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 13:49:36,740 INFO L276 IsEmpty]: Start isEmpty. Operand 2180 states and 5394 transitions. [2020-09-15 13:49:36,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-15 13:49:36,750 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:49:36,750 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:49:36,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-15 13:49:36,750 INFO L427 AbstractCegarLoop]: === Iteration 4 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 13:49:36,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:49:36,751 INFO L82 PathProgramCache]: Analyzing trace with hash 704389695, now seen corresponding path program 1 times [2020-09-15 13:49:36,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:49:36,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818055679] [2020-09-15 13:49:36,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:49:36,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:49:36,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 13:49:36,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818055679] [2020-09-15 13:49:36,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:49:36,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 13:49:36,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [488419717] [2020-09-15 13:49:36,893 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 13:49:36,894 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 13:49:36,899 INFO L274 McrAutomatonBuilder]: Finished intersection with 13 states and 12 transitions. [2020-09-15 13:49:36,899 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 13:49:36,899 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 13:49:36,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-15 13:49:36,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:49:36,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-15 13:49:36,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-15 13:49:36,903 INFO L87 Difference]: Start difference. First operand 2180 states and 5394 transitions. Second operand 4 states. [2020-09-15 13:49:37,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:49:37,012 INFO L93 Difference]: Finished difference Result 2507 states and 6115 transitions. [2020-09-15 13:49:37,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-15 13:49:37,013 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-15 13:49:37,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:49:37,022 INFO L225 Difference]: With dead ends: 2507 [2020-09-15 13:49:37,023 INFO L226 Difference]: Without dead ends: 1814 [2020-09-15 13:49:37,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-15 13:49:37,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1814 states. [2020-09-15 13:49:37,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1814 to 1440. [2020-09-15 13:49:37,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1440 states. [2020-09-15 13:49:37,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 3564 transitions. [2020-09-15 13:49:37,142 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 3564 transitions. Word has length 12 [2020-09-15 13:49:37,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:49:37,145 INFO L479 AbstractCegarLoop]: Abstraction has 1440 states and 3564 transitions. [2020-09-15 13:49:37,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-15 13:49:37,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 3564 transitions. [2020-09-15 13:49:37,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 13:49:37,148 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:49:37,148 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:49:37,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-15 13:49:37,149 INFO L427 AbstractCegarLoop]: === Iteration 5 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 13:49:37,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:49:37,150 INFO L82 PathProgramCache]: Analyzing trace with hash 285424347, now seen corresponding path program 1 times [2020-09-15 13:49:37,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:49:37,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360591772] [2020-09-15 13:49:37,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:49:37,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:49:37,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 13:49:37,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360591772] [2020-09-15 13:49:37,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:49:37,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-15 13:49:37,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [605003087] [2020-09-15 13:49:37,242 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 13:49:37,245 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 13:49:37,256 INFO L274 McrAutomatonBuilder]: Finished intersection with 43 states and 65 transitions. [2020-09-15 13:49:37,256 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 13:49:37,396 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [55625#(not (= ~r~0 0))] [2020-09-15 13:49:37,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-15 13:49:37,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:49:37,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-15 13:49:37,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-15 13:49:37,398 INFO L87 Difference]: Start difference. First operand 1440 states and 3564 transitions. Second operand 6 states. [2020-09-15 13:49:37,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:49:37,470 INFO L93 Difference]: Finished difference Result 1734 states and 4180 transitions. [2020-09-15 13:49:37,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-15 13:49:37,471 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-09-15 13:49:37,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:49:37,478 INFO L225 Difference]: With dead ends: 1734 [2020-09-15 13:49:37,478 INFO L226 Difference]: Without dead ends: 1508 [2020-09-15 13:49:37,479 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-15 13:49:37,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1508 states. [2020-09-15 13:49:37,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1508 to 1376. [2020-09-15 13:49:37,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1376 states. [2020-09-15 13:49:37,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 3414 transitions. [2020-09-15 13:49:37,536 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 3414 transitions. Word has length 19 [2020-09-15 13:49:37,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:49:37,537 INFO L479 AbstractCegarLoop]: Abstraction has 1376 states and 3414 transitions. [2020-09-15 13:49:37,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-15 13:49:37,537 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 3414 transitions. [2020-09-15 13:49:37,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 13:49:37,539 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:49:37,539 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:49:37,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-15 13:49:37,540 INFO L427 AbstractCegarLoop]: === Iteration 6 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 13:49:37,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:49:37,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1336794727, now seen corresponding path program 2 times [2020-09-15 13:49:37,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:49:37,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258493028] [2020-09-15 13:49:37,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:49:37,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:49:37,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 13:49:37,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258493028] [2020-09-15 13:49:37,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:49:37,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-15 13:49:37,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [319103757] [2020-09-15 13:49:37,626 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 13:49:37,628 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 13:49:37,638 INFO L274 McrAutomatonBuilder]: Finished intersection with 49 states and 76 transitions. [2020-09-15 13:49:37,638 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 13:49:37,747 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [60117#(<= 0 ~r~0)] [2020-09-15 13:49:37,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-15 13:49:37,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:49:37,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-15 13:49:37,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-15 13:49:37,749 INFO L87 Difference]: Start difference. First operand 1376 states and 3414 transitions. Second operand 6 states. [2020-09-15 13:49:37,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:49:37,797 INFO L93 Difference]: Finished difference Result 530 states and 1160 transitions. [2020-09-15 13:49:37,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-15 13:49:37,798 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-09-15 13:49:37,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:49:37,798 INFO L225 Difference]: With dead ends: 530 [2020-09-15 13:49:37,798 INFO L226 Difference]: Without dead ends: 0 [2020-09-15 13:49:37,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-15 13:49:37,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-15 13:49:37,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-15 13:49:37,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-15 13:49:37,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-15 13:49:37,800 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-09-15 13:49:37,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:49:37,801 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-15 13:49:37,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-15 13:49:37,801 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-15 13:49:37,801 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-15 13:49:37,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-15 13:49:37,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 01:49:37 BasicIcfg [2020-09-15 13:49:37,808 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-15 13:49:37,812 INFO L168 Benchmark]: Toolchain (without parser) took 8268.57 ms. Allocated memory was 146.8 MB in the beginning and 292.0 MB in the end (delta: 145.2 MB). Free memory was 101.0 MB in the beginning and 147.2 MB in the end (delta: -46.1 MB). Peak memory consumption was 99.1 MB. Max. memory is 7.1 GB. [2020-09-15 13:49:37,813 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 146.8 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-15 13:49:37,814 INFO L168 Benchmark]: CACSL2BoogieTranslator took 973.12 ms. Allocated memory was 146.8 MB in the beginning and 204.5 MB in the end (delta: 57.7 MB). Free memory was 100.3 MB in the beginning and 163.8 MB in the end (delta: -63.4 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-09-15 13:49:37,815 INFO L168 Benchmark]: Boogie Procedure Inliner took 76.75 ms. Allocated memory is still 204.5 MB. Free memory was 163.8 MB in the beginning and 161.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-15 13:49:37,816 INFO L168 Benchmark]: Boogie Preprocessor took 38.58 ms. Allocated memory is still 204.5 MB. Free memory was 161.8 MB in the beginning and 160.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-15 13:49:37,817 INFO L168 Benchmark]: RCFGBuilder took 852.04 ms. Allocated memory is still 204.5 MB. Free memory was 160.4 MB in the beginning and 127.3 MB in the end (delta: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 7.1 GB. [2020-09-15 13:49:37,818 INFO L168 Benchmark]: TraceAbstraction took 6312.06 ms. Allocated memory was 204.5 MB in the beginning and 292.0 MB in the end (delta: 87.6 MB). Free memory was 127.3 MB in the beginning and 147.2 MB in the end (delta: -19.8 MB). Peak memory consumption was 67.7 MB. Max. memory is 7.1 GB. [2020-09-15 13:49:37,822 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 146.8 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 973.12 ms. Allocated memory was 146.8 MB in the beginning and 204.5 MB in the end (delta: 57.7 MB). Free memory was 100.3 MB in the beginning and 163.8 MB in the end (delta: -63.4 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 76.75 ms. Allocated memory is still 204.5 MB. Free memory was 163.8 MB in the beginning and 161.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 38.58 ms. Allocated memory is still 204.5 MB. Free memory was 161.8 MB in the beginning and 160.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 852.04 ms. Allocated memory is still 204.5 MB. Free memory was 160.4 MB in the beginning and 127.3 MB in the end (delta: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6312.06 ms. Allocated memory was 204.5 MB in the beginning and 292.0 MB in the end (delta: 87.6 MB). Free memory was 127.3 MB in the beginning and 147.2 MB in the end (delta: -19.8 MB). Peak memory consumption was 67.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.1s, 99 ProgramPointsBefore, 56 ProgramPointsAfterwards, 100 TransitionsBefore, 55 TransitionsAfterwards, 2448 CoEnabledTransitionPairs, 6 FixpointIterations, 23 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 994 VarBasedMoverChecksPositive, 32 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 6576 CheckedPairsTotal, 45 TotalNumberOfCompositions - PositiveResult [Line: 700]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.0s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: 462 SDtfs, 422 SDslu, 599 SDs, 0 SdLazy, 149 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 82 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4772occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 6 MinimizatonAttempts, 5459 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 72 ConstructedInterpolants, 0 QuantifiedInterpolants, 2258 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...